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Visible Light Spectrum
Join us here to ask and answer questions on the "illuminating" topic of the visible light spectrum. This includes questions about: refraction, reflection, rainbows, prisms, mixing colored lights, and the spectrum of colors that make up white light.
1,220 Questions
What type of wave borders visible light at the red end of its range?
The type of electromagnetic wave the borders visible light at the red end of its range is the Infrared light wave.
Why are x- rays more penetrating than visible light waves?
Higher frequency photons have more energy than lower frequency photons.
What is the difference in frequency between light pulses and electric pulses?
- Visible Light - 430 THz to 790 THz
- Electric signals that will stay in wires - 0 Hz (DC) to roughly 5 GHz
Terahertz (THz) is 1000 Gigahertz (GHz).
Power line frequencies are 60 Hz or 50 Hz in most countries.
Why do all parts of earth not get light at the same time?
The biggest source of light on earth is our Sun. The Sun is, basically, a long-burning nuclear fusion fire. Like fires familiar to we earthlings, it puts out heat and light ... in fact, it is the most significant source of heat and light ... the only other sources of light are terrestrial sources (artificial lights on earth and volcanoes). Light from the Moon is actually reflected sunlight, so if we don't count sunlight we also cannot count moonlight; likewise, the Northern Lights and Southern Lights are effects from the sun hitting our atmosphere and magnetic fields so would not count, either; the only other light sources would be distance stars ... essentially, without the sun, we would only have what light we have when there is a New Moon.
If you had a ball and a flashlight in an otherwise dark room, and the ball and flashlight were on a table (so you wouldn't have to hold the flashlight) and the flashlight was turned on and pointed toward the ball, only half of the ball would be lit by the flashlight (not counting light reflected off the walls or other surfaces behind the flashlight which would at least somewhat light the backside of the ball). Its a very good analogy to your question: if you walked around the table to observe the side of the ball opposite the flashlight, it would be in shadow, and that is what nighttime is: it's the part of the earth that is in shadow from our Sun.
The earth spins around its axis (in my ball/flashlight analogy, consider spinning the ball); thus, all of the earth at some point or another actually gets lit by the sun, but only half of the Earth at any particular point in time (not counting light from the sun reflected from the moon back to Earth, which we call moonlight).
The Sun does not surround the earth, it is just one object -- it is much bigger than the earth, but very far away; just like you can block a giant mountain that is far away from your eyesight with a thumb, so too does the earth (a tiny speck compared with the giant Sun) shade half of itself from the sun's light.
Is frequency a characteristic of visible light that does not depend on the light's wavelength?
No, frequency and wavelength of visible light are directly related through the speed of light in a vacuum. The frequency of visible light waves is inversely proportional to their wavelength: shorter wavelengths have higher frequencies and vice versa. This relationship is described by the equation c = λν, where c is the speed of light, λ is wavelength, and ν is frequency.
If both speeds are measured in the same medium, whether it be
vacuum, water, or jello, then they are equal.
How is the visible light spectrum used to see white light?
White light is a combination of all the colors in the visible light spectrum. When white light enters our eyes, the different colors within the light are separated and detected by our retinas, allowing us to perceive white light as a combination of colors. This process is known as trichromatic color vision.
Why are bright colors difficult to see in a room lit by candles?
Your eyes have been desensitized because of the candles, so the bright colors affect you more.
Are the x rays behaves like visible light or not?
Yes, but x-rays can't be focused by lenses, they just pass through the lens. They can only be focused by glancing angle nested cylinder mirrors. X-rays pass through most things.
What is similarities between apparent brightness and absolute brightness?
Both relate to brightness; both are measured in the same units; both are used for astronomical objects such as stars or galaxies.
Who discovered the propagation of mutant makapuno?
THE embryo culture technique of the late Dr. Emerita de Guzman of the University of the Philippines Los Baños developed in the 1960s. reference: http://palmguide.org/image.php?image=73521C_2001110255855
Where can one find the detail of the visible light?
You can find the detail of the visible light online at the Ucolick Organization website. Once on the page, you can learn details about light and it's wavelengths.
The order of colors observed in the visible light spectrum is determined by the?
Colors are ordered by frequency, or equivalently, by wavelength.
What does the visible light spectrum refer to?
Visible light is part of what is called the electromagnetic spectrum. Light is electromagnetic energy, and so are radio waves, microwaves, X-rays and gamma rays.
What color has a lower frequency of visible light in the electromagnetic spectrum?
The color spectrum in order of increasing frequency (that also means decreasing band width) is red, orange, yellow, green, blue, violet. So red is the lowest visible frequency. Below that is called infrared and the color with a frequency greater than violet is called ultraviolet. Neither infrared nor ultraviolet is visible to the human eye although there may be other animals that are able to detect them.
Which electromagnetic wave has a frequency closest to that of visible light?
Visible light is part of the electromagnetic spectrum. The visible part has wavelengths of 7000 to 4000 Angstroms. The frequencies are 4.0 - 7.0 x 1014 Hz.
Who contributed to the evidence of electromagnetic waves and their link to light?
James Clerk Maxwell derived the existence of electromagnetic waves. Due to its speed (as calculated from his equations), which is the speed of light, he concluded that light is probably also an electromagnetic wave. This was confirmed later.
What frequency of light of light has energy of 8.2x1019 j?
When you talk about the energy of any electromagnetic radiation in terms of its
frequency, you're talking about the energy of a single photon.
8.2 x 1019 J is a bit more than 1,000 times the energy that the Braidwood nuclear
generating station south of Chicago produces in a year.
In order for a single photon to have 8.2 x 1019 J of energy, its frequency would have to be
8.2 x 1019/Planck's Konstant = 8.2 x 1019/6.62608 x 10-34 = 1.2375 x 1053 Hz.
That's about 1034 times the frequency a photon needs in order to be called a
gamma-ray. At that frequency, the wavelength is about 2.422 x 10-45 meter,
and that's something like 10-27 the size of an electron.
Perhaps you meant to type 8.2 x 10minus 19 J.
The frequency of photon with that energy is
8.2 x 10-19/6.62608 x 10-34 = 1.238 x 1015 Hz.
and its wavelength is about 242 nanometers.
That would be a photon in the mid-range ultraviolet.
If you want a beam of light that carries your alleged 8.2 x 10plus 19 J,
you just need more of these photons ... like 1038 of them.
What is the difference between soft x-rays and hard x-rays?
Soft X-Rays have lower frequency and energy (125ev), than hard X-Rays,(125kev).
Why is it easier to divert microwaves around an object then to divert light waves?
actually microwaves are easier to bend than light waves because microwaves are larger than light waves
Are there 5 colours in the visible spectrum of white light?
The 7 accepted colours of the rainbow are: Red, Orange, Yellow, Green, Blue, Indigo, Violet.
A rainbow forms when sunlight, shinning through raindrops, is split into the main colours making up 'white' light.
Is light part of the radio spectrum?
No, light is not part of the radio spectrum. But, both the radio spectrum and light are part of the electromagnetic spectrum. The electromagnetic spectrum is a range of frequencies from very low to very high. Light frequencies are higher than radio frequencies but both are the same kind of thing.
Where is the Northern Lights located?
the northern lights are ,i am pretty sure,located in the northern hemisphere in Alaska
How do you make your pad less visible?
You can adjust the opacity of your pad by decreasing the brush opacity or using a lighter color. Additionally, you can use blending modes like Multiply or Overlay to help blend your pad with the background. Experiment with different techniques to find the best option for your specific needs.
How do gamma rays at the core become visible light at the surface?
In the core of a star, high-energy gamma rays are produced through nuclear fusion processes. These gamma rays travel through the layers of the star, losing energy through interactions until they reach the surface. At the surface, the gamma rays are converted into visible light through processes like thermal radiation or scattering, making the star shine with visible light.
